Footwear sole



FIG. 1 is a front elevational view of a footwear sole showing my new design, the broken lines showing a sandal in FIGS. 1 through 6 being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a front elevational view of a sole unit, showing only the sole portion of my new design;

FIG. 8 is a rear elevational view of FIG. 7;

FIG. 9 is a right side elevational view of FIG. 7;

FIG. 10 is a top plan view of FIG. 7;

FIG. 11 is a bottom plan view of FIG. 7; and,

FIG. 12 is a left side elevational view of FIG. 7. 

The ornamental design for a footwear sole, as shown and described. 